2306221 has 2 divisors, whose sum is σ = 2306222. Its totient is φ = 2306220.

The previous prime is 2306197. The next prime is 2306261. The reversal of 2306221 is 1226032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1334025 + 972196 = 1155^2 + 986^2 .

It is a cyclic number.

It is not a de Polignac number, because 2306221 - 2¹³ = 2298029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2306195 and 2306204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2306261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1153110 + 1153111.

It is an arithmetic number, because the mean of its divisors is an integer number (1153111).

2^2306221 is an apocalyptic number.

It is an amenable number.

2306221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2306221 is an equidigital number, since it uses as much as digits as its factorization.

2306221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2306221 is about 1518.6247067660. The cubic root of 2306221 is about 132.1195160276.

The spelling of 2306221 in words is "two million, three hundred six thousand, two hundred twenty-one".